∑_(u=1)^(su-2)▒∑_(v=1)^sv▒δ(i,j)..how to write this equation in for loop?

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Dhines 2012-10-10

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∑_(u=1)^(su-2)▒∑_(v=1)^sv▒δ(i,j)...here the summation lower limit is u=1 and upper limit is su-2 similar to next summation form....i didnt know is my matlab R2009b contains symbolic tool or not. can u tel this equation in "for" loop.

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Jan 2012-10-15

I still cannot read the magic characters in the question.

Walter Roberson 2012-10-15

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What does F h ( u , v ) = i mean in the context of the delta function?

Does δ ( F h ( u , v ) = i , F h ( u + 1 , v ) = j ) mean the same as

1 if (Fh(u,v) == i & Fh(u+1,v) == j)
0 otherwise

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Björn 2012-10-15

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编辑：Björn 2012-10-15

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It seems that the delta is the Kronecker Delta. In that case ou can make the following for-loop for this:

 result=0;
 for u=1:su-2
     for v=1:sv
         if Fh(u,v) == Fh(u+1,v)
             result=result+1;
         end
     end
 end
 result

Make sure that the matrix Fh is defined beforehand

The value of 'result' after the loops is the answer of the double sum.

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Dhines 2012-10-17

did u read my question well??...<a href="http://www.codecogs.com/eqnedit.php?latex=\sum_{u=1}^{su-2}\sum_{v=1}^{sv}\delta (Fh(u,v)=i,Fh(u@plus;1,v)=j)" target="_blank" rel="nofollow noopener noreferrer"><img src="http://latex.codecogs.com/gif.latex?\sum_{u=1}^{su-2}\sum_{v=1}^{sv}\delta (Fh(u,v)=i,Fh(u+1,v)=j)" title="\sum_{u=1}^{su-2}\sum_{v=1}^{sv}\delta (Fh(u,v)=i,Fh(u+1,v)=j)" /></a>